ABB | SACE Tmax XT
Internal electronic accessories | 2 - Measurement
137 | © 2020 ABB | 1SDH001821A1002 - ECN000135670
2 - Measurement
Presentation
Measurement
modul allows the following measurements to be taken:
• Voltage (RMS measurement of line-to-line voltages and phase voltages in the applicable cases)
• Frequency of the voltages
• Power and energy, also using the phase current measurements
Measurement performance is higher if the
Class 1 Power & Energy Metering
package is present.
NOTE:
measurement performance is described on page
and
If used in conjunction with
Ekip Synchrocheck
, it is also able to recognize whether the synchronization
conditions between external sockets and external contacts are able to allow the synchronization contact to
close (see chapter dedicated to
Ekip Synchrocheck
from page 174).
Configurations available
The module can be ordered with different connection configurations:
• connection to internal terminals or in an external terminal box
• connection to the upper or lower terminals of the poles on the basis of the expected power flow
• with normal or reverse pole order
For full details about ordering and the connections, consult technical catalog
Electrical characteristics
The
Measurement module works correctly in the electrical conditions described on page 16.
Installations with up to 1150 VAC line-to-line voltage can be connected and configured in the presence of
connections to external sockets and an isolation transformer.
Isolation transformer
The isolation transformer must conform to standard IEC 60255-27 and possess the following characteristics:
Characteristics
Description
Electrical
• Accuracy class:
≤
0,2
• Performance:
≥
10 VA
• Overload: 20 % permanent
• Insulations: 4 kV between inputs and outputs, 4 kV between shield and
outputs, 4 kV between shield and inputs
• Frequency: Fn +-10%
• Primary voltage: 100 to 1150 V (nominal, to be configured via menu)
• Secondary voltage: 100 to 230 V (nominal, to be configured via menu)
